There's no such thing as downtime during Golden Globes weekend. In Hollywood, the Champagne started flowing Friday night at the hot spot Chateau Marmont, and it continued Saturday at the hopping Four Seasons hotel. USA TODAY's Andrea Mandell reports on how it all went down.

Friday

W magazine's Best Performances party in the open-air penthouse of Chateau Marmont was the place to be for stargazing. As Dom Pérignon and truffle fries were passed on trays, W editor in chief Stefano Tonchi and editor at large Lynn Hirschberg celebrated the photography of Juergen Teller and welcomed Jennifer Lawrence, Bradley Cooper, Lana Del Rey, John Hawkes, Melissa Leo, Amy Adams, Miranda Kerr, Michelle Dockery, Matt Bomer, Chelsea Handler and Andre Balazs. (Despite the glam affair, most stars stayed in their jackets, thanks to a chilly dip in L.A.'s weather.)

Saturday

Over at the Four Seasons hotel, there was plenty of pampering to be found at the InStyle Beauty Lounge, where celebs like Dancing With the Stars' Karina Smirnoff were treated to makeup applications, hair styling and O.P.I. manicures. Even Matt Lauer was nearby in the lobby, in his gym clothes.

Upstairs, comedians Louis C.K. and Jeff Garlin bumped into each other at the HBO Luxury Lounge, sponsored by L'Oreal and Motorola. "I write everything I do in longhand on a yellow pad," Garlin told onlookers while checking out goodies from Staples. "Someone else puts it in final draft. I edit on a computer, but everything I do comes out of here first," he said, tapping his head. Nearby, The Office's Kate Flannery scoped out vegan red Michael Antonio booties that matched her hair.

A time for tea

Over at the crowded BAFTA tea, the room was brimming with stars snacking on cucumber and salmon sandwiches and fruit tarts. The party welcomed A-listers like Daniel Day-Lewis, Marion Cotillard, Sienna Miller, Olivia Munn, Sally Field, Kathryn Bigelow, Ben Affleck, Jon Bon Jovi, Jennifer Lawrence, Bradley Cooper, David Oyelowo, Freida Pinto and Dev Patel. Amanda Seyfried, in a peekaboo Vionnet dress, joked that she had found her dream Globes dress for Sunday. "It's made of leather and it's a bodysuit. I'm just kidding," she told reporters.

Bradley Cooper, left, and Hugh Jackman pose together at the BAFTA tea at the Four Seasons on Saturday, Jan. 12.(Photo: Matt Sayles Matt Sayles/Invision/AP)

Hugh Jackman was in a British state of mind, celebrating the fact that Les Misérables opened at No. 1 in the U.K. this weekend. "I'm thrilled because really the show, as French as it is, is a product of England," he said on the red carpet. As an Oscars hosting alum, has he offered Seth MacFarlane any advice? "Seeing him the other morning at the nominations, that guy needs no help at all," Jackman said. "I thought he was hilarious."

Fellow Oscar nominee Christoph Waltz showed off his new buzz cut. "I didn't cut it off, I grew it back," he said. "I had nothing (thanks to) a movie with (director) Terry Gilliam. I had no eyebrows, either." Waltz said he and Quentin Tarantino have a special relationship on film sets after two hugely successful films. "But it's not, like, a clandestine brotherhood," he said, laughing.

Silver Linings Playbook's Jacki Weaver said she wasn't expecting her Oscar nomination in the slightest. "I honestly couldn't believe it," she said. "I know everyone says that, but because I hadn't won any of the other awards, I didn't think there was a chance." Next week she's heading to Texas to begin shooting Parkland, "about the JFK assassination from the point of view of the doctors in Parkland Hospital," she said. "In the space of 36 hours, they had to deal with JFK and Lee Harvey Oswald. I'm playing Lee Harvey Oswald's mother."

Meanwhile, her director, David O. Russell, confirmed some casting buzz: Louis C.K. is joining his newest untitled film, which is set to start filming in February, and also stars Amy Adams, Bradley Cooper, Christian Bale and Jeremy Renner. "He's in our film," Russell confirmed. "He'll be in cahoots with Bradley Cooper. It's going to be really good."

Why Louie? "I just love his show," he said. "The voice in his show is so honest, so real. His demeanor really suits the part he's going to play."